Electronic Principles
Which one of the following statements is true for the voltage in a parallel RL circuit?

The total voltage is equal to the sum of the voltages across the resistance and inductance
None of these
The total voltage lags the total current by less than 90
The voltage always has the same amplitude and phase for every part of the circuit
The total voltages is less than the sum of the voltages across the resistance and inductance

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Electronic Principles
Which one of the following statements best applies to a series RLC circuit?

The sum of the current is always less than the applied current
The current waveform for each component always has the same amplitude and phase as the applied current
All of these
The voltage waveform for each component always has the same amplitude and phase as the applied voltage
None of these

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Electronic Principles
Which one of the following phrases best describes residual magnetism?

None of these
Magnetism that remains in the core of an electromagnet after the current through the coil is turned off
The amount of magnetic flux that is not confined to the core material of an electromagnet
The force of attraction between the poles of a permanent and temporary magnetic field
The circular magnetic field that surrounds a conductor carrying a current

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